Iowa Administrative Code
Agency 641 - Public Health Department
Chapter 40 - Standards for Protection Against Radiation
Rule 641-40.72 - Disposal by Release Into Sanitary Sewerage
Universal Citation: IA Admin Code 641-40.72
Current through Register Vol. 47, No. 6, September 18, 2024
(1) A licensee may discharge licensed material into sanitary sewerage if each of the following conditions is satisfied:
a. The material is readily soluble,
or is readily dispersible biological material, in water; and
b. The quantity of licensed radioactive
material that the licensee releases into the sewer in one month divided by the
average monthly volume of water released into the sewer by the licensee does
not exceed the concentration listed in Table III of Appendix B; and
c. If more than one radionuclide is released,
the following conditions must also be satisfied:
(1) The licensee shall determine the fraction
of the limit in Table III of Appendix B represented by discharges into sanitary
sewerage by dividing the actual monthly average concentration of each
radionuclide released by the licensee into the sewer by the concentration of
that radionuclide listed in Table III of Appendix B; and
(2) The sum of the fractions for each
radionuclide required by 40.72(1)"c" (1) does not exceed
unity; and
d. The total
quantity of licensed radioactive material that the licensee releases into the
sanitary sewerage in a year does not exceed 5 Ci (185 GBq) of hydrogen-3, 1 Ci
(37 GBq) of carbon-14, and 1 Ci (37 GBq) of all other radioactive materials
combined.
(2) Excreta from individuals undergoing medical diagnosis or therapy with radioactive material are not subject to the limitations contained in 40.72(1).
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